Home / 11,532.80-15,915.68-6,428.77

Finding the Fourth Proportional to 11,532.80, 15,915.68 and 6,428.77

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Solution

The fourth proportional to 11,532.80, 15,915.68 and 6,428.77 is: 8,871.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,532.80 : 15,915.68 = 6,428.77 : x
  2. Step 2: Convert to fraction form
    11,532.80/15,915.68 = 6,428.77/x
  3. Step 3: Cross multiply
    11,532.80x = 15,915.68 × 6,428.77
  4. Step 4: Simplify right side
    11,532.80x = 102,318,246.11
  5. Step 5: Solve for x
    x = 102,318,246.11/11,532.80
  6. Step 6: Final answer
    x = 8,871.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.